Oil-gas generator.



D. F. FELTEN. OIL GAS GENERATOR.

APPLICATION FILED JULY 30, 1-9L5.

Ill

Patented Apr. 11, 1916.

2 shans-snzn 1.

[III

anvem/toz D. IfTelic n,

THE COLUMBIA PLANOGRAPH 50. WASIIIINGTDN, D. C-

Patented Apr. 11, 1916.

2 SHEETSSHEET 2- aD. IFEZZGM,

.DAVID F. FELTEN, OF rARso sKANsAs OIL-GAS GENERATOR.

. Specification of Letters Paten't.

Patented Apr. 11, 1916.

Application filed m so, i915. Seria1'No.42,794. T v 1 To all whom it may concern:

Be it known that 1, DAVID F. FELTEN, a citizen of the United States, residing at Parsons, in the county of Labette and State of Kansas, have invented new and useful Improvements in Oil-Gas Generators, of which the following is a specification.

This invention relates to oil-gas generators and burners for use in stoves and furto provide a generator and burner in which the air is preheated prior to a dmixture'with the gas, in which there is a down draft of the mixture of gas and air, whereby a superior gas mixture is produced, and in which provision is made for preventing the accumulation and securing the consumption of carbon.

A still further object of the invention is to provide a generator and burner which is simple of construction, inexpensive of production, installation and use, and capable of being employed as a burner for any of the purposes specified as well as for general heating purposes.

lVith these and other objects in view, the invention consists of the features of construction, combination and arrangementof parts herein fully described and claimed, reference being had to the accompanying drawings in which Figure 1 is a central vertical longitudinal section of an oil generator and burner 0on structed in accordance with my invention. Fig. 2 is a horizontal sectional view on the line 22 of' Fig. 1. Fig. 3 is a horizontal sectional view on the line .33 of Fig. 1.

Fig. 4c is a view similar to Fig. 1, showing a modified form of my invention. Referring now more particularly to Figs. 1, 2 and 3, inclusive 1 designates a hollow base which is adapted to be placed on the grate in a stove, furnace or other heater,

. and is open at its lower end so that air from below the grate may be caused to pass upwardly therethrough. This base may be of any suitable form and size and is provided at its rear end with a goose-necked air heating and supply tube 2 having an upwardly extending or ascending intake arm 3 and a downwardly extending or descending discharge arm 4. The base and airsupply and heating tube may 'be,fand preferably are, formed of a single casting, but they may be formed of any desired number of parts.

The discharge end, 1 of the tube 2 is formed with an annular flange 5 which is arranged to abut against a flange 6 at the upper end of a vertically disposed air heating chamber 7, bolts or rivets 8 passing through said flanges and securing the air heating chamber in position. The chamber 7 is provided with a perforated upper head orspider9 providing openings 10 for the downward passage of the air preheated on its flow through the air supply and heating tube 2. The lower end of the chamber 7 is open and is arranged above and in spaced relation to a generating plate 11. Thisplate 11 is detachably mounted upon the hollow base 1 and is arranged a suitable'distance below the lower end of the air heating chamshape d cross sectionally, being thereby pro-- vided'with an upwardly and outwardly extending deflecting wall 12, and the central portion of the bottom of said plate is conical in form, as at 13 so that'its apex forms what I term a firing pin 14 which is arranged directly under the center of the air superheating chamber. g a

Disposed Within and concentrically with relation to the superheatin'g chamber? is a mixing chamber 15. This chamber 15 has a lower open end terminating centrally above the firing pin 14; and a suitable distance above the lower end of the superheat ing chamber. The upper end of the mixing chamber is threaded or otherwise detachably connected with a dome-shaped head or air admission chamber 16, provided with rows of air inlet passages or ports 17 and 18, arranged in staggered relation, andhaving at its upper end a collar 19 in threaded engagement with the vertical discharge end 20 0f a vapor supply pipe 21, which extends into the discharge portion 40f the air heating and supply tube 5 and downwardly into the air superheating chamber through the central solid portion of the spider .9 with minating in a flaring or conical outlet 25,

whereby the generated vapor will be discharged in a determined manner within the mixing chamber, as hereinafter fully described.

Arranged between the lower end of the air superheater chamber 7 and the generating plate 11. is a vapor generating coil 26, which may be of any size or heating area desired, and which is located immediately above the generating plate and within the zone of the flames from the combustion of the gas in the operation of the apparatus. The inlet end 27 of this coil is enlarged to provide a receiving and expansion chamber receiving a valve casing 28 upon the delivery end of a coil supply pipe 29, through which oil. under gravity or air pressure is supplied as required for generation and consumption. Also communicating with the valve chamber is an auxiliary oil or air supply pipe 30, through which additional oil or compressed air may be supplied as occasion may require. The valve casing terminates in a jet nozzle 31 having a constricted port which flares at its outer end, so that the oil will be sprayed or jetted to a determined degree within the expansion chamber 27 for travel through the coil and conversion into vapor.

Arranged within the valve casing 528 is a longitudinally movable check valve One end, the rear end, 33 of said valve, is adapted to close the inlet 3 1 to the valve chamber when the pressure of the vapor or gas within the system exceeds the head or feed pressure of the oil, and a portion 35 of the valve is adapted under such conditions to also close the auxiliary oil or air supply pipe 30, whereby safety in operation is insured. e valve is adapted to move forward to open position under the pressure of the oil and. air behind it, but is limited in forward mo tion by pins 86 acting as stops and spacing members, whereby proper clearance may be "established for the flow of oil to the chamber 27. It will, of course, be understood that the oil on its travel through the heated coil, arranged within the heating zone of the burner, will be highly heated and converted into vapor for supply to the nozzle 28, whereby it is discharged into the mixing chamber for aeration and the production of a combustible gas for consumption.

In order to insure the conversion of all the oil into vapor before it is delivered to the nozzle 23, I provide within the pipe 21, between the coil 26 and the nozzle 23, expansion chambers'37 and 38 into which project expansion nozzles 39 and 40 similar in construction to the nozzle 31, each being provided with a constricted port having a flaring extremity so that the vapor will be retarded and its pressure increased, just prior to its introduction into the expansion chamber, into which the vapor expands so that any oil or fluid matter which may be in course of travel with the vapor will be precipitated into the chamber and allowed to remain therein until converted into vapor, when it passes with the column of vapor to the nozzle 23 for discharge. By providing two separators of the construction described, any fluid oil which may casually pass the first separator will be caught by and retained within the second separator, thus insuring the conversion of all the oil. into vapor before it passes to the discharge nozzle.

On its discharge from the nozzle 23 into the mixing chamber 15 the vapor will be projected in the form of a hollow cone against the surfaces of the mixing chamber at a point below the top of said chamber, by which it will be atomized and at the same time cause the formation of a partial vacuum in said chamber, whereby the preheated air passing through the tube 2 and ports 10 into the chamber 7 will be drawn through the ports 17 and 18 into the mixing chamber and there caused to commingle with the vapor, whereby a combustible gas is produced. Inasmuch as the vapor, as described, is free from particles of oil and has been heated to a high temperature, and as the air is preheated in the tube 2 and superheated in the chamber 7, it will be evident that the vapors will be of a high degree of fluidity and hence will mix in a most thorough and efficient manner, providing a gas which insures rapid and instant consumption with complete combustion. Inasmuch as also the vapor and air have a down draft action or course of travel, it will be clear that their admixture is still further promoted, the operation being further such that the carbon precipitated by the burning gas will be deposited upon the surface of the generator plate and raised by the temperature of the plate and gases to the point of incandescence and consumed, making the generator and burner substantially odorless and smokeless and hence capable of producing a most intense heat and at the same time being cleanly in action.

In the operation of the generator and burner, it will of course be understood that the burner is first heated, which is done by burning a small quantity of oil in the generating plate 11. When the burner has been heated to the required degree oil is then caused to be supplied through the oil supply pipe. This oil is then vaporized in the coil and mlxed with air in the manner previously described to form a combustible gas. As stated, the gas and air are in such a highly heated condition when they are mixed that the mixture is-caused to burn with a clear flame and with little or no smoke. Such carbon particles as may be carried by the mixture will be deposited on the generator plate and will thus be maintained in direct contact with the flame and subjected to the action thereof so that it will be almost entirely consumed. From time to time, at longer intervals, when carbon has accumulated on the firing pin, the generating plate may be removed from the hollow base and the carbon deposit knocked off by a hammer or other suitable implement. This is practically all the attention the burner requires. The down draft imparted by the burner to the gas and highly heated air greatly facilitates and promotes the mixture of the gas and air and insures the combusti on of all the gases.

In the form of my invention shown in Fig. 4, the construction is substantially the same as that hitherto described except that the cap or air inlet member 16 is imperforate, while the mixing chamber 15 is formed with a constricted outlet 16 at its lower end. With this construction, the gas is discharged under pressure into the lower portion of the air superheating chamber without prior admixture with air, and is combined with the superheated air in said chamber to provide the combustible mixture at the moment of ignition. This modified construction of the burner part of my invention will be found efficient and desirable under some conditions of service.

The heating coil may, in practice, be disposed in any suitable position to give the best results, and, in some cases, a blower or its equivalent may be attached to the base to supply a forced draft, in order that the natural draft of the flue or chimney of the stove or furnace may be augmented to any desired degree.

I claim 1. In a gas. generator and burner, the combination'of an air heating tube having an upwardly extending intake arm and a downwardly extending discharge arm, a generator plate, an air superheating chamber communicating with the heating tube and disposed between the same and the generator plate, a vaporizing coil disposed between the superheater chamber and the generator plate, and a tube into which discharge end of said coil is arranged, said tube being disposed within and communicating with said superheating chamber.

2. In an oil-gas generator and burner, th combination of an air heating tube having an upwardly extending intake arm and a downwardly extending discharge arm, an air superheating chamber communicating with provided at its upper end with air inlets forming direct connections between the tubular member and air superheating chamber.

8. In an oil-gas generator and burner, the combination of an air heating tube having an upwardly extending intake end and downwardly extending discharge end, an air superheating chamber communicating at its upper end with the discharge end of said tube, a. generator plate arranged below the lower end of the air superheating chamber, a vaporizing coil disposed between the superheating chamber and generating plate, a mixing chamber disposed within the air superheating chamber and communicating at its upper and lower ends therewith, into the upper end of which mixing chamber the delivery end of the vaporizing tube extends, and a nozzle upon the delivery end of the vaporizing tube having a constricted passage with a flaring portion for delivering the vapor in conical shape within the mixing chamber below the upper inlets thereof.

4;. In an oil-gas generator and burner, the combination of an air heating tube having an upwardly extending intake end and a downwardly extending discharge end, a generating plate, an air superheating chamber disposed between the discharge end of the tube and the generating plate, said tube being open at its lower end and in open communication at its upper end with the generator plate, a vaporizing tube disposed between the generator plate and air superheating chamber, a tubular mixing chamber within the air heating chamber, a cap upon the upper end of said tube provided with air inlets, into which cap and tube the delivery end of the vaporizing coil extends, and a nozzle upon the discharge end of said coil having a passage constricted at its inner end and flaring at its outer end.

5. In an oil and gas generator and burner, the combination of an air heating tube having an upwardly extending inlet end and a downwardly extending discharge end, an air superheating chamber communicating with the discharge end of the tube, a generator plate disposed beneath the lower end of said air superheating chamber, a tubular mixing chamber within-the air superheating chamber, a vaporizing coil between the air superheating chamber and the generating plate, said coil having an inlet end provided with a flaring chamber and a discharge passage with an inner constricted portion 1;: end provlded wlth a pair of spaced flarlng and an outer flaring portion. l

chambers, nozzles communicating With the In testimony whereof I affix my signature respective chambers End having 1constricted in presence of two-Witnesses.

inner portions and aring disc iarge portions, a check valve controlling the nozzle DAVID FELTEIN' in the inlet end of the coil, and a nozzle Vitnesses:

upon the discharge end ofthe coil Within W. D. ATKINSON,

the mixing chamber, saidv nozzle having a HELEN YOUNG.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. 0. 

